DocTabs is like having screen/tmux for a single buffer. Vim already lets you manage different buffers very efficiently, but within a buffer you are limited to jumping by searches or tags. With DocTabs, however, you can organize a large file into sections, which you can visualize and jump between. Each section keeps its own editing view so you can jump back to where you were easily. The prefix-style switching should be familiar to screen/tmux users. The tabline is used to show all the sections and highlight the currently active one, hence the plugin's name.

This is useful for a wide range of scenarios: documentation, source code, HTML, project plans, todo or GTD files, reminder files, journals, novels, your ~/.vimrc, etc. The DocTabs plugin and documentation were both written using DocTabs.